Abstract
The isothermal oxidation behavior in a temperature range from 900 to 1100 °C and mechanical properties of intermetallic alloys with a wide range of compositions in the Ti–Nb–Al system were investigated. A composition range of the alloys having excellent oxidation resistance is suggested. The oxidation resistance maps summarizing the results of weight gain data and the constituents of oxide scale were established, as were the compressive strength maps as well. The lowest weight gain was determined to be 1–2 mg cm−2 and 2–3 mg cm−2 for oxidation at 1100 °C and 1200 °C for 100 h respectively. The compressive yield strength at 1100 °C and strain rates of 10−2 s−1 and 10−5 s−1 reached 450 MPa and 90 MPa respectively.
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